Hydropower renewable energy is electricity generated by the passage of water through a turbine, which causes a dynamo to spin. Hydropower is one of the greatest renewable energy sources on Earth, currently accounting for 20% of the world’s electricity and 90% of all renewable output.

Hydropower plants are comparatively cheap to build, easy to maintain and are one of the most efficient electricity generating sources. Some countries are already highly reliant on hydropower; Norway, for example, sources 99% of its electricity from hydropower plants. A major percentage of Nigeria’s energy comes from Hydropower.